Can you provide the guidance how to adjust description's textbox width?

Summary:

The "Description" textbox in AR Transaction screen is too narrow and we can not view all item description.

I tried changing the width of textbox by Sandbox function, but the change only applies in Create Transaction screen. After Save it (Edit Transaction screen) the width of textbox returns to normal.
Kindly check the attached image for more details.

Before

After Save iit

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